As an AI, I can provide some general insights into how an INFP might behave if they have feelings for someone. However, it's important to remember that everyone is unique, and individual experiences may vary.

INFPs, also known as the Mediators, are introverted, intuitive, feeling, and perceiving individuals. They are known for their deep emotions, empathy, and idealistic nature. When an INFP likes someone, they may exhibit the following behaviors:

1. Deep conversations: INFPs value meaningful connections and are often drawn to deep conversations. If they like you, they may engage in lengthy discussions about personal beliefs, dreams, and aspirations. They enjoy exploring the depths of your thoughts and emotions.

2. Genuine interest: INFPs are naturally curious and empathetic. If they like you, they will show a genuine interest in your life, hobbies, and experiences. They may ask thoughtful questions and actively listen to your responses, wanting to understand you on a deeper level.

3. Emotional openness: INFPs are comfortable expressing their emotions and appreciate emotional vulnerability in others. If they like you, they may share their feelings, fears, and insecurities with you. They might also be more receptive to your emotions and provide a safe space for you to express yourself.

4. Thoughtful gestures: INFPs are known for their thoughtfulness and compassion. If they have feelings for you, they may show it through small acts of kindness, such as remembering your favorite things, surprising you with thoughtful gifts, or offering support during difficult times.

5. Spending time together: INFPs value quality time and enjoy one-on-one interactions. If they like you, they will make an effort to spend time with you, whether it's going on walks, having deep conversations, or engaging in shared hobbies. They may also prefer intimate settings over large social gatherings.

6. Nervousness or shyness: INFPs can be shy and reserved, especially when it comes to expressing their romantic feelings. If they like you, they may become slightly nervous or awkward around you. They might struggle with finding the right words or appear more introverted than usual.

7. Idealizing and romanticizing: INFPs have a tendency to idealize people and situations. If they like you, they may romanticize the idea of being with you, envisioning a deep and meaningful connection. They might express their admiration for your qualities and appreciate your uniqueness.

It's important to note that INFPs can be complex individuals, and their feelings may not always be straightforward or easily recognizable. Communication is key in any relationship, so if you're unsure about an INFP's feelings, it's best to have an open and honest conversation with them.